US6378876B1 - Metal gasket assembly for cylinder head - Google Patents

Metal gasket assembly for cylinder head Download PDF

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Publication number
US6378876B1
US6378876B1 US09/690,726 US69072600A US6378876B1 US 6378876 B1 US6378876 B1 US 6378876B1 US 69072600 A US69072600 A US 69072600A US 6378876 B1 US6378876 B1 US 6378876B1
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United States
Prior art keywords
main plate
annular beads
cylinder
plate
auxiliary plate
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Expired - Fee Related, expires
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US09/690,726
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English (en)
Inventor
Yoshitaka Matsushita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Leakless Industry Co Ltd
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Nippon Leakless Industry Co Ltd
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Application filed by Nippon Leakless Industry Co Ltd filed Critical Nippon Leakless Industry Co Ltd
Assigned to NIPPON LEAKLESS INDUSTRY CO., LTD. reassignment NIPPON LEAKLESS INDUSTRY CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MATSUSHITA, YOSHITAKA
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
    • F16J15/0818—Flat gaskets
    • F16J15/0825—Flat gaskets laminated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
    • F16J15/0818—Flat gaskets
    • F16J2015/0843—Flat gaskets with an edge portion folded over the plate itself

Definitions

  • the present invention relates to a metal gasket assembly for a cylinder head, which is interposed between a cylinder block and a cylinder head of an internal combustion engine.
  • a metal gasket assembly for a cylinder head has been conventionally known, having a structure shown in FIG. 4 .
  • This conventional metal gasket assembly 1 comprises a metal main plate 2 and a metal auxiliary plate 3 , and a metal surface pressure adjusting plate 4 .
  • the main plate 2 is formed therein with main plate cylinder openings 2 a in positions corresponding to cylinder bores of a cylinder block of an internal combustion engine, main plate annular beads 2 b formed around the main plate cylinder openings 2 a, being projected downward, and having a cross-sectional shape of ‘V’ (the so-called full bead shape), and a main plate outer peripheral bead 2 c formed so as to entirely surround the main plate annular beads 2 b and a plurality of not shown coolant holes formed in the peripheral parts of the main plate annular beads 2 b, and having a cross-sectional shape of slope (the so-called half bead shape).
  • V the so-called full bead shape
  • main plate outer peripheral bead 2 c formed so as to entirely surround the main plate annular beads 2 b and a plurality of not shown coolant holes formed in the peripheral parts of the main plate annular beads 2 b, and having a cross-sectional shape of slope (the so-called half bead shape).
  • the auxiliary plate 3 comprises auxiliary plate cylinder openings 3 a formed at positions corresponding to the main plate cylinder openings 2 a, fold-over parts 3 b which are folded around the peripheral edges of the auxiliary plate cylinder openings 3 a in the auxiliary plate 3 in a direction toward the main plate 2 , and which have a width with which the fold-over parts 3 b are vertically lapped with the entire ‘V’ cross-sectional shape of the main plate annular beads 2 b on the main plate 2 , and a plurality of not shown auxiliary plate coolant holes formed corresponding to the above-mentioned main plate coolant holes in the main plate 2 .
  • the auxiliary plate 3 is entirely formed into a flat shape having no beads so as to be lapped below the above-mentioned main plate 2 .
  • the above-mentioned surface pressure adjusting plate 4 has a planer shape corresponding to that of the auxiliary plate 3 , except the above-mentioned fold-over parts 3 b, and is interposed between the auxiliary plate 3 and the main plate 2 , the thickness of the surface pressure adjusting plate 4 being thinner than that of the auxiliary plate 3 in the part which excludes that of the fold-over parts 3 b.
  • the above-mentioned conventional cylinder head metal gasket assembly 1 is interposed between a cylinder block 5 and a cylinder head 6 in an internal combustion engine, as shown in FIG. 4, and is fastened so that the main plate annular beads 2 b formed around the main plate cylinder openings 2 a corresponding to the cylinder bores 5 a in the cylinder block 5 can prevent combustion gas in combustion chambers defined by the cylinder bores 5 a in the cylinder block 5 , recessed parts 6 a in the cylinder head 6 opposed to the cylinder bores and the top parts of not shown pistons in the cylinder bores 5 a, from blowing to the outside, and the main plate outer peripheral bead 2 c entirely surrounding the above-mentioned plurality of main plate coolant holes corresponding to not shown coolant passages which are formed in the cylinder block 5 and the cylinder head 6 and mutually communicated, can prevent coolant from leaking.
  • the auxiliary plate 3 is formed with the fold-over parts 3 b at positions corresponding to the main plate annular beads 2 b on the main plate 2 so as to increase the thickness of the auxiliary plate 3 , and meanwhile, the surface pressure adjusting plate 4 which is thinner than the auxiliary plate 3 is lapped with the auxiliary plate 3 , except the positions corresponding to the main plate annular beads 2 b on the main plate 2 , so as to adjust the distribution of the surface pressures between the main plate annular beads 2 b and parts other than the beads 2 b in order to enhance the sealing function.
  • sleeve fitting holes 5 b having a size which is much greater than that of the inherent cylinder bores are formed in the cylinder block 5 at positions where the cylinder bores are to be formed, and cast iron sleeves 7 having high lubricity are press-fitted in the sleeve fitting holes 5 b so as to define the cylinder bores 5 a in the cast iron sleeves 7 in order to aim at preventing abrasion of the inner wall surfaces of the cylinders and seizure of the pistons.
  • the fold-over parts 3 b of the auxiliary plate 3 extend up to positions above the upper end surface of the cylinder bock 5 , exceeding the cast iron sleeves 7 , and accordingly, if the cast iron sleeves 7 are depressed as mentioned above so as to define a difference in height between the upper end surface of the cylinder block 5 and the upper end faces of the cast iron sleeves 7 , the fold-over parts 3 b cannot cope with the difference in height, resulting in that the fold-over parts 3 b of the auxiliary plate 3 are caught between the upper end surface of thee cylinder block 5 and the lower end surface of the cylinder head 6 .
  • the fold-over parts 3 b hinders the metal gasket assembly 1 from being sufficiently fastened, and accordingly, there has been raised such a problem that the main plate annular beads 2 b of the main plate 2 cannot be sufficiently fastened between the upper surface of the cast iron sleeves 7 and the lower end surface of the cylinder head 6 so that no high sealing function can be obtained.
  • the above-mentioned fold-over parts 3 b faces toward not to the cast iron sleeves 7 but the main plate 2
  • the flat part of the auxiliary plate 3 faces toward the cylinder block 5 and the upper end surfaces of the cast iron sleeves 7 , and accordingly, even though the width of the fold-over parts 3 b is decreased so that the fold-over parts 3 b are prevented from overlapping the upper end surface of the cylinder block 5 , the main plate annular beads 2 b of the main plate 2 cannot be fastened on the upper surfaces of the cast iron sleeves 7 unless the flat part of the auxiliary plate 3 is deformed into a half bead-like shape.
  • the surface pressure adjusting plate 4 is also caught between the upper surface of the cylinder block 5 and the lower surface of the cylinder head 6 so as to hinder the main plate annular beads 2 b from being sufficiently fastened on the upper end surfaces of the cast iron sleeves 7 . Accordingly, there has been raised such a problem that the main plate annular beads 2 b cannot be sufficiently fastened so that no high sealing function cannot be obtained.
  • An object of the present invention is to provide a metal gasket assembly which can advantageously solve the above-mentioned problems, and accordingly, the metal gasket assembly according to the present invention, comprises a metal main plate, and a metal auxiliary plate mutually lapped with the main plate, the main plate including main cylinder openings formed at positions corresponding to cylinder bores in a cylinder block of an internal combustion engine, main plate annular beads formed around the main plate cylinder openings and having a cross-sectional shape of ‘V’, a plurality of main plate coolant holes formed in the peripheral parts of the main plate annular beads, a main plate outer peripheral bead formed at a position where it entirely surrounds the main plate annular beads and the plurality of main plate coolant holes, and having a cross-sectional shape of slope, while the auxiliary plate including auxiliary plate cylinder openings formed corresponding to the main plate cylinder openings in the main plate, fold-over parts formed around the auxiliary plate cylinder openings and folded in a direction reverse to the direction toward the main plate,
  • the main plate annular beads around the main plate cylinder openings corresponding to the cylinder bores in the cylinder block and having the ‘V’ cross-sectional shape, and the auxiliary plate annular beads opposed to the main plate annular beads, projected in a direction reverse to the projecting direction of the main plate annular beads, and having the slope cross-sectional shape can prevent combustion gas in combustion chambers defined by the cylinder bores in the cylinder block, recessed parts in the cylinder head opposed to the cylinder bores, and top parts of pistons in the cylinder bores, from blowing to the outside, and the main plate outer peripheral bead entirely surrounding the plurality of main plate coolant holes corresponding to coolant passages formed in the cylinder bock and the cylinder head and mutually communicated, and the auxiliary plate outer peripheral bead formed corresponding to the main plate outer peripheral bead and entirely surrounding the plurality of auxiliary plate cool
  • the auxiliary plate fold-over parts having a width with which they are lapped with the entire ‘V’ shape of the main plate annular beads on the main plate increases the thickness of the auxiliary plate at positions corresponding to the main plate annular beads, while the auxiliary plate annular beads in the fold-over parts in the auxiliary plate are lapped with the main plate annular beads and are fastened therewith so that the distribution of the surface pressure between the main plate annular beads and the parts other than the beads can be suitably adjusted, thereby it is possible to enhance the sealing function of the main plate annular beads, and to allow the auxiliary plate annular beads to exhibit a high sealing function.
  • the sealing functions of the main plate outer peripheral bead and the auxiliary plate outer peripheral bead can be ensured so as to prevent coolant from leaking while the sealing functions of the main plate annular beads and the auxiliary plate annular beads can be enhanced so as to effectively prevent combustion gas in the combustion chamber from blowing out.
  • the auxiliary plate fold-over parts are formed being folded in a direction reverse to the direction toward the main plate, and the width of the fold-over parts is equal to or smaller than the thickness of the sleeves fitted in the sleeve fitting holes in the cylinder block and defining the cylinder bore.
  • the fold-over parts in the auxiliary plate are prevented from being caught between the upper end surface of the cylinder block and the lower end surface of the cylinder head when the metal gasket assembly being interposed and fastened between the upper end surface of the cylinder block and the lower end surface of the cylinder head, but are positioned being opposed to the upper end surfaces of the sleeves, the fold-over parts does not cause the fastening of the metal gasket on the upper end surfaces of the sleeves to be hindered, and the flat part of the auxiliary plate to be forcibly deformed by a difference in height between the upper end surface of the cylinder block and the upper end surface of the sleeves so as to hinder the fastening of the metal gasket assembly on the upper end surfaces of the sleeve, even though the sleeves are depressed.
  • the sealing functions of the main plate annular beads and the auxiliary plate annular beads can be sufficiently enhanced so as to surely prevent combustion gas from blowing out from the combustion chamber even thought the sleeves are depressed.
  • the width of the auxiliary plate annular beads may be set to be equal to or smaller than that of the main plate annular beads, and with the auxiliary plate annular beads having such a smaller widths, the slope of the beads is steeper than that of the auxiliary plate annular beads having a height and a width which are equal to those of the main plate annular beads so that the auxiliary plate annular beads can hardly be depressed, thereby it is possible to further enhance the sealing functions of the main plate annular beads and the auxiliary plate annular beads.
  • the height of the auxiliary plate annular beads may be set to be equal to or higher than that of the main plate annular beads, and with the auxiliary plate annular beads having such a higher height, the slope of the beads is steeper than that of the auxiliary plate annular beads having a height and a width which are equal to those of the main plate annular beads so that they can hardly be depressed, thereby it is possible to further enhance the sealing functions of the main plate annular beads and the auxiliary plate annular beads.
  • FIG. 1 is a sectional view along line A—A in FIG. 2, illustrating a first embodiment of a metal gasket assembly for a cylinder head according to the present invention
  • FIG. 2 is a plan view illustrating the metal gasket assembly shown in FIGS. 1 and 3;
  • FIG. 3 is a sectional view along line A—A in FIG. 2, illustrating a second embodiment of a metal gasket assembly for a cylinder head according to the present invention.
  • FIG. 4 is a sectional view illustrating the arrangement of a conventional metal gasket for a cylinder head at a position similar to the position along the line A—A in FIG. 2 .
  • a metal gasket 1 of the first embodiment comprises a metal main plate 2 , and a metal auxiliary plate 3 lapped with the main plate 2 , and specifically, the main plate 2 is made of a SUS-301H stainless steel material used for a main plate in a usual metal gasket assembly, and the auxiliary plate 3 is made of a stainless steel material such as SUS-304, SUS-310S or SUS-430 which is usually used for an auxiliary plate in a usual metal gasket assembly having grommets and which has a degree of elongation greater than that of the stainless material for the main plate so that fold-over parts can be easily formed without defects.
  • the main plate 2 in the metal gasket assembly 1 in this embodiment comprises, as shown in the FIGS.
  • main plate cylinder openings 2 a formed at positions corresponding to three bores in the cylinder block of a gasoline engine as an internal combustion engine, main plate annular beads 2 b formed around the main plate cylinder openings 2 a, being downward projected in this embodiment, and having a cross-sectional shape of ‘V’ (the so-called full bead shape), a plurality of main plate coolant holes 2 d formed in the peripheral parts of the main plate annular beads 2 b, and a main plate outer peripheral bead 2 c formed so as to entirely surround three annular beads 2 b and the plurality of coolant holes 2 d in the peripheral parts thereof and having a cross-sectional shape of slope (the so-called half bead shape), which is lowered outward (leftward in the figure) of the gasket assembly in this embodiment, and further has main plate bolt holes 2 e, for cylinder head mounting bolts, main plate lubrication oil holes 2 f for circulating engine lubrication oil and the like.
  • V the so-called full bea
  • the auxiliary plate 3 in the metal gasket assembly 1 in this embodiment comprises auxiliary plate cylinder openings 3 a formed corresponding to the main plate cylinder openings 2 a in the main plate 2 , that is, corresponding to the cylinder bores Sa in the cylinder block 5 , fold-over parts 3 b folded in the outer peripheral parts of the auxiliary cylinder openings 3 a in a direction reverse to the direction toward the main plate 2 (the downward direction in FIG.
  • auxiliary plate annular beads 3 c formed on the fold-over parts 3 b so as to be opposed to the main plate annular beads 2 b on the main plate 2 , projected in a direction reverse to the projecting direction of the main plate annular beads 2 b, that is, the upward direction in this embodiment, and having a cross-sectional shape of ‘V’, a plurality of auxiliary plate coolant holes 3 e formed corresponding to the plurality of the main plate coolant holes 2 d in the main plate 2 , and an auxiliary plate outer peripheral bead 3 d opposed to the main plate outer peripheral bead 2 c on the main plate 2 and having a cross-sectional shape of slope so as to be inclined in a direction reverse to the inclined direction of the main plate outer peripheral bead 2 c, that is, the direction in which it is raised outward (leftward in the figure) of
  • the width L 1 of the fold-over parts 3 b of the auxiliary plate 3 is slightly smaller than a thickness L 2 of sleeves 7 made of e.g. cast iron and fitted in sleeve fitting holes 5 b in the cylinder block 5 and defining the cylinder bores 5 a, and further, the width W 2 of the auxiliary plate annular beads 3 c is set to be smaller than the width W 1 of the main plate annular beads 2 while the height H 2 of the auxiliary plate annular beads 3 b is set to be higher than the height Hi of the main plate annular beads 2 b.
  • the metal gasket assembly 1 in this embodiment is interposed between the cylinder block 5 and the cylinder head 6 of the gasoline engine, and is fastened by the cylinder head mounting bolts, and accordingly, the main plate annular beads 2 b having a ‘V’ cross-sectional shape, particularly corresponding to the cylinder bores 5 a in the cylinder block 5 , and the auxiliary plate annular beads 3 c opposed to the main plate annular beads 2 b and projected in a direction reverse to the direction of the projection of the annular beads 2 b and having a ‘V’ cross-sectional shape can prevent combustion gas in combustion chambers which is defined by the cylinder bores 5 a in the cylinder block 5 , recessed parts 6 a in the cylinder head 6 opposed to the cylinder bores 5 a and the top parts of pistons, not shown, in the cylinder bores 5 a, from blowing to the outside, and the main plate outer peripheral bead 2 c surrounding the plurality of coolant holes 2 d corresponding to coolant passages which are formed in the
  • the fold-over part 3 b of the auxiliary plate 3 having the width L 1 with which they are lapped with at least the entire ‘V’ shape of the main plate annular beads 2 b on the main plate 2 increases the thickness of the auxiliary plate 3 at positions corresponding to the main plate annular beads 2 b, and further, the auxiliary plate annular beads 3 c on the fold-over parts 3 b of the auxiliary plate 3 are lapped with the main plate annular beads 2 b and are fastened together.
  • the distribution of the surface pressure between the main plate annular beads 2 b and the other parts of the main plate 2 can be suitably adjusted by suitably selecting the thickness of the auxiliary plate 3 , and accordingly, it is possible to enhance the sealing function of the main plate annular beads 2 b and to allow the auxiliary plate annular beads 3 c themselves to exhibit a high sealing function.
  • the sealing functions of the main plate outer peripheral beads 2 c and the auxiliary plate outer peripheral beads 3 d can be ensured so as to prevent coolant from leaking while the sealing functions of the main plate annular beads 2 b and the auxiliary plate annular beads 3 c can be enhanced so as to effectively prevent combustion gas from blowing out from the combustion chambers.
  • the fold-over parts 3 b of the auxiliary plate 3 are formed being folded in a direction reverse to the direction toward the main plate 2 , that is, in the downward direction, and since the width L 1 of the fold-over parts 3 b is slightly smaller than the thickness L 2 of the sleeves 7 which are fitted in the sleeve fitting holes 5 b of the cylinder block 5 so as to define the cylinder bores 5 a, the fold-over parts 3 b of the auxiliary plate 3 can be prevented from being caught between the upper end surface of the cylinder block 5 and the lower end surface of the cylinder head 6 , but are located being opposed to the upper end surfaces of the sleeves 7 when the metal gasket assembly 1 is interposed between the cylinder block 5 and the cylinder head 6 , and accordingly, the fold-over parts 3 b do not cause the fastening of the metal gasket assembly 1 on the upper end surfaces of the sleeve 7 to be hindered, and the fold-over parts 3 b do not cause the
  • the metal gasket assembly 1 according to the present invention, even though the sleeves 7 are depressed with respect to the upper surface of the cylinder block 5 , the sealing function between the main plate annular beads 2 b and the auxiliary plate annular beads 3 c can be sufficiently enhanced, thereby it is possible to surely prevent combustion gas from blowing out from the combustion chamber.
  • the width W 2 of the auxiliary plate annular beads 3 c is smaller than the width W 1 of the main plate annular beads 2 b, and since the height H 2 of the auxiliary plate annular beads 3 c is higher than the height H 1 of the main plate annular beads 2 b, with the auxiliary plate annular beads 3 c having the smaller width and the higher height, the slope of the beads 3 c is steeper than that of the auxiliary plate annular beads having a width and a height equal to those of the main plate annular beads 2 b, and accordingly, the auxiliary plate annular beads 3 c can hardly be depressed, thereby it is possible to enhance the sealing functions of the main plate annular beads 2 b and the auxiliary plate annular beads 3 c.
  • FIG. 3 is a sectional view along line A—A in FIG. 2, which shows the second embodiment of the metal gasket assembly according to the present invention.
  • the metal gasket assembly 1 in the second embodiment is the same as that of the metal gasket assembly 1 in the first embodiment, except that the projecting directions of the main plate annular beads 2 b and the auxiliary plate annular beads 3 c are reverse to those in the first embodiment, and that the projecting directions of the main plate outer peripheral bead 2 c and the auxiliary plate outer peripheral bead 3 c are reverse to those in the first embodiment.
  • the metal gasket assembly 1 in this second embodiment can also exhibit advantages similar to those obtained by the first embodiment.
  • one or both of the width and the height of the auxiliary plate annular beads 3 c is/are set to be equal to one or both of those of the main plate annular beads 2 b although the width of the auxiliary plate annular beads 3 c is set to be smaller than that of the main plate annular beads 2 b while the height of the former is set to be lower than that of the latter in the above-mentioned embodiment.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gasket Seals (AREA)
US09/690,726 1999-10-20 2000-10-18 Metal gasket assembly for cylinder head Expired - Fee Related US6378876B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP29861099A JP3756713B2 (ja) 1999-10-20 1999-10-20 シリンダーヘッド用メタルガスケット
JP11-298610 1999-10-20

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US (1) US6378876B1 (ja)
EP (1) EP1094258B1 (ja)
JP (1) JP3756713B2 (ja)
DE (1) DE60017230T2 (ja)
HK (1) HK1032992A1 (ja)

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US20030151210A1 (en) * 2001-03-07 2003-08-14 Kosaku Ueta Metal gasket
US20030230858A1 (en) * 2002-06-12 2003-12-18 Ishino Gasket Mfg. Co., Ltd. Sealing bead
US20050046117A1 (en) * 2003-08-28 2005-03-03 Martin Novil Sealing gasket with flexible stopper
US20050046120A1 (en) * 2003-08-28 2005-03-03 Martin Novil Sealing gasket with flexible stopper
US20070200301A1 (en) * 2003-08-28 2007-08-30 Freudenberg-Nok General Partnership Sealing Gasket With Flexible Stopper
US20070267822A1 (en) * 2006-05-16 2007-11-22 Ishikawa Gasket Co., Ltd Metal gasket
US20080197579A1 (en) * 2007-02-16 2008-08-21 Ishikawa Gasket Co., Ltd. Laminate-type gasket
US20090033039A1 (en) * 2005-06-28 2009-02-05 Freudenberg-Nok General Partnership Gasket with asymmetric bead arrangement
US20110298186A1 (en) * 2009-02-13 2011-12-08 Federal-Mogiul Sealing Systems Gmbh Gaskets having additional sealing element

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KR101194428B1 (ko) * 2010-04-09 2012-10-25 동아공업 주식회사 워터 인렛부의 더블 하프 비드 구조를 갖는 헤드 가스켓
KR20110113342A (ko) * 2010-04-09 2011-10-17 동아공업 주식회사 Ｔ―조인트부의 더블 하프 비드 구조를 갖는 헤드 가스켓
KR101195177B1 (ko) 2010-06-09 2012-10-29 동아공업 주식회사 외부 이물질 차단용 비드를 갖는 가스켓
KR101376738B1 (ko) 2012-10-18 2014-03-20 동아공업 주식회사 금속 가스켓의 분리형 씰 구조
US9970548B2 (en) 2013-03-14 2018-05-15 Federal-Mogul Llc Multi-layer gasket

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US20030151210A1 (en) * 2001-03-07 2003-08-14 Kosaku Ueta Metal gasket
US6827352B2 (en) * 2001-03-07 2004-12-07 Japan Metal Gasket Co., Ltd. Metal gasket
US20030230858A1 (en) * 2002-06-12 2003-12-18 Ishino Gasket Mfg. Co., Ltd. Sealing bead
US20070200301A1 (en) * 2003-08-28 2007-08-30 Freudenberg-Nok General Partnership Sealing Gasket With Flexible Stopper
US20050046120A1 (en) * 2003-08-28 2005-03-03 Martin Novil Sealing gasket with flexible stopper
US7234705B2 (en) * 2003-08-28 2007-06-26 Freudenberg-Nok General Partnership Sealing gasket with flexible stopper
US20050046117A1 (en) * 2003-08-28 2005-03-03 Martin Novil Sealing gasket with flexible stopper
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JP3756713B2 (ja) 2006-03-15
EP1094258A3 (en) 2003-08-27
EP1094258A2 (en) 2001-04-25
DE60017230D1 (de) 2005-02-10
HK1032992A1 (en) 2001-08-10
EP1094258B1 (en) 2005-01-05
JP2001124209A (ja) 2001-05-11
DE60017230T2 (de) 2005-12-15

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